做了个差不多。。。 账单那简化了一点 不 其实都简化了点。。。
入口：
package com.mgh;
import java.util.Scanner;
public class Initial {
public static void main(String[] args) {
// TODO Auto-generated method stub
Vehicle vcl[]=new Vehicle[6];
vcl[0]=new Car("奥迪A4",1,500,4);
vcl[1]=new Car("马自达6",2,400,4);
vcl[2]=new Pickup("皮卡学6",3,450,4,2);
vcl[3]=new Car("金龙",4,800,20);
vcl[4]=new Truck("松花江",5,400,4);
vcl[5]=new Truck("依维柯",6,1000,20);
System.out.println("欢迎使用答答租车系统:");
System.out.println("您是否要租车: 1.是 0.否");
Scanner scan=new Scanner(System.in);
String isRent=scan.next();
if(isRent.equals("1")){
System.out.println("您可租车的类型及其价目表:");
for(int i=0;i<5;i++){
vcl[i].infoShow();
}
System.out.println("请输入您要租汽车的数量:");
int rentNum=scan.nextInt();
StringBuffer selectVclList=new StringBuffer();
int costPerDay=0;
int selectVclID[]=new int[rentNum];
for(int i=0;i<rentNum;i++){
System.out.println("请输入第"+(i+1)+"辆车的序号:");
selectVclID[i]=scan.nextInt()-1;
selectVclList.append(vcl[selectVclID[i]].name+" ");
costPerDay+=vcl[selectVclID[i]].rentPrice;
}
System.out.println("请输入租车天数:");
int rentDays=scan.nextInt();
int allCost=costPerDay*rentDays;
String bill=new String();
System.out.println("您的账单:");
bill=selectVclList.toString()+" "+ rentDays +"天 总价"+allCost+"元";
System.out.println(bill);
scan.close();
}
else{
System.out.println("感谢使用答答租车系统，欢迎再来！");
}
}
}父类：
package com.mgh;
public abstract class Vehicle {
String name=new String();
int rentPrice;
int vehicleNum;
public abstract void infoShow();
}Car子类，客车也在其中了 属性一样没必要另开一类：
package com.mgh;
public class Car extends Vehicle {
int menLoad;
public Car(String vName,int vNum,int rPrice,int vmLoad){
this.name=vName;
this.vehicleNum=vNum;
this.rentPrice=rPrice;
this.menLoad=vmLoad;
}
@Override
public void infoShow(){
// TODO Auto-generated method stub
System.out.println(this.vehicleNum+". "+this.name+" "+this.rentPrice+"元/天 载客:"+this.menLoad+"人");
}
}Truck子类：
package com.mgh;
public class Truck extends Vehicle {
private int cargoLoad;
public Truck(String vName,int vNum,int rPrice,int vcLoad){
this.name=vName;
this.vehicleNum=vNum;
this.rentPrice=rPrice;
this.cargoLoad=vcLoad;
}
@Override
public void infoShow() {
// TODO Auto-generated method stub
System.out.println(this.vehicleNum+". "+this.name+" "+this.rentPrice+"元/天 载重:"+this.cargoLoad+"吨");
}
}Pickup子类 皮卡：
package com.mgh;
public class Pickup extends Vehicle {
private int menLoad;
private int cargoLoad;
public Pickup(String vName,int vNum,int rPrice,int vmLoad,int vcLoad){
this.name=vName;
this.vehicleNum=vNum;
this.rentPrice=rPrice;
this.cargoLoad=vcLoad;
this.menLoad=vmLoad;
}
@Override
public void infoShow() {
// TODO Auto-generated method stub
System.out.println(this.vehicleNum+". "+this.name+" "+this.rentPrice+"元/天 载客:"+this.menLoad+"人,载重:"+this.cargoLoad+"吨");
}
}
